Z-Up Auto tastes like a can of lime soda cracked open on a hot afternoon. Fast Buds created this Sativa-leaning autoflower by fusing the RS-11 cut with Auto Z F5, and the cross brought out what the breeder calls an entirely new terpene profile: tangy, sweetly sour, fizzy lime that stands out from anything else in the catalog.
Potency is right up there with the flavor. Z-Up Auto is rated at up to 29% THC with CBD under 1%, and its 65% Sativa / 35% Indica genetics point the experience toward energy and good spirits. This F5 feminized edition is bright, loud, and built for daytime use and flavor hunters.
As an autoflower, she needs no change in photoperiod. Run 18/6 or 20/4 from germination to harvest and she finishes in 8-9 weeks from seed. Fast Buds classes her as XL at 70-120 cm (28-47 in): compact and manageable, yet productive, with 450-600 g/m² (1.5-2 oz/ft²) indoors and 60-300 g (3-11 oz) per plant outdoors.
Late in bloom, the bright green buds get dusted with trichomes and fiery orange pistils, and they turn extra sticky with a super sour, pungent smell that is hard to hide.
The Lime Soda Experience
The flavor is the headline: zesty lime, sweet lemon, and sour citrus combined into a sparkling, soda-like profile. It is tangy on the inhale and sweet on the exhale, with a fizzy brightness that makes every pull feel fresh. The aroma is just as strong in the grow room, so plan on a good carbon filter.
The high arrives quickly and sticks around for a good while. Expect a bubbly, mood-lifting rush that keeps your energy up without an abrupt crash. Grower reports split almost evenly between energetic and happy, with giggly, uplifted, and relaxed close behind, and a good number mention feeling talkative and creative. It is a natural fit for social plans, chores with a soundtrack, or an afternoon outdoors.
Growing Z-Up Auto
Z-Up Auto grows with vigor yet stays easy to manage. She does especially well in warmer climates or in controlled indoor setups. Fast Buds advises a modest feeding plan, constant air movement, and soft training methods to guide the canopy and control height, so go easy on nutrients and use low-stress training rather than high-stress techniques.
Indoors, a single plant per pot in a medium tent fills out nicely. Outdoors, plant after the last frost and enjoy a harvest roughly two months later, with room for another run in a long, warm season.
Z-Up Auto Characteristics
| Strain type | Autoflowering (feminized) |
| Genetics | RS-11 cut x Auto Z F5 |
| Indica/Sativa | 65% Sativa / 35% Indica |
| THC | Up to 29% |
| CBD | Less than 1% |
| Effect | Energetic, bubbly, mood-lifting, social |
| Flavor | Lime soda, sweet lemon, sour citrus |
| Indoor yield | 450-600 g/m² (1.5-2 oz/ft²) |
| Outdoor yield | 60-300 g/plant (3-11 oz/plant) |
| Seed to harvest | 8-9 weeks |
| Height | 70-120 cm (28-47 in), XL size class |
| Climate | Warm climates outdoors or controlled indoor setups; greenhouse and mixed light |
| Best cultivation technique | Light feeding, gentle LST, steady airflow |
FAQ
What are the genetics of Z-Up Auto?
Z-Up Auto is a cross of the RS-11 cut and Auto Z F5, stabilized as an F5 feminized autoflower with 65% Sativa genetics.
What does Z-Up Auto taste like?
Like lime soda: tangy, sweet, and sour, with zesty lime and sweet lemon notes and a fizzy citrus feel.
How strong is Z-Up Auto?
Fast Buds rates it at up to 29% THC, so the high comes on quickly and holds for a good while.
How long does Z-Up Auto take to finish?
About 8-9 weeks from seed. It needs no light switch; 18/6 or 20/4 works for the full grow.
How should I feed and train Z-Up Auto?
Keep feeding on the light side, provide steady airflow, and use gentle low-stress training to shape the canopy and manage height.
How much does Z-Up Auto yield?
Indoors, 450-600 g/m² (1.5-2 oz/ft²). Outdoors, 60-300 g (3-11 oz) per plant.
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